Re: [Haskell-beginners] Combining the Rand and State monads

Brent Yorgey <byorgey <at> seas.upenn.edu> writes:

Your problem seems to be the type you have given to modelT: it claims that it will work for *any* type g but this is not so; g must represent a pseudorandom number generator. This works:

D'oh! A dumb mistake on my part. Thank you, Brent.